So....Not much. I'm currently working on one of these, an older 7.3, and it's equipped almost exactly as the 7.2 is now. Has the steel fork and the regular handlebar grips. Tires are Bontrager...Don't know which model.

I am thinking of getting a 7.2 FX, but the 7.3 is cheaper. No bike shops in my area have them both in store, so I need to decide on which one I want before seeing the bike in person.
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JL01Jun 11 '11 at 15:13

@JL01: @ToddPierce's answer covers it pretty well. For the same model year, the 7.3 is better than the 7.2 (but in very minor ways). Is there some reason you can't go to two bike shops and check them both out?
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freiheit♦Jun 12 '11 at 20:01